./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-57.i --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_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/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_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-57.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/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_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/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 523cdc555ae18a7121d858cb3ce401c3fbc4c545022234654bee429dbd299e9d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:34:28,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:34:28,508 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:34:28,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:34:28,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:34:28,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:34:28,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:34:28,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:34:28,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:34:28,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:34:28,557 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:34:28,558 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:34:28,558 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:34:28,559 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:34:28,559 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:34:28,559 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:34:28,559 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:34:28,560 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:34:28,560 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:34:28,560 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:34:28,560 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:34:28,560 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:34:28,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:34:28,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:34:28,561 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:34:28,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:34:28,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:34:28,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:34:28,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:34:28,562 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:34:28,562 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:34:28,562 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:34:28,562 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:34:28,563 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:34:28,563 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:34:28,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:34:28,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:34:28,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:34:28,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:34:28,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:34:28,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:34:28,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:34:28,563 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:34:28,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:34:28,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:34:28,564 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:34:28,564 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:34:28,564 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_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/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 -> 523cdc555ae18a7121d858cb3ce401c3fbc4c545022234654bee429dbd299e9d [2024-11-14 03:34:28,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:34:28,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:34:28,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:34:28,890 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:34:28,890 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:34:28,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-57.i Unable to find full path for "g++" [2024-11-14 03:34:30,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:34:31,147 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:34:31,148 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-57.i [2024-11-14 03:34:31,158 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/data/ffcba7ecd/cd5792faf2454ed2b73078f89b5fffe7/FLAGe72511b88 [2024-11-14 03:34:31,435 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/data/ffcba7ecd/cd5792faf2454ed2b73078f89b5fffe7 [2024-11-14 03:34:31,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:34:31,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:34:31,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:34:31,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:34:31,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:34:31,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:31,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee29002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31, skipping insertion in model container [2024-11-14 03:34:31,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:31,468 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:34:31,638 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_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-57.i[916,929] [2024-11-14 03:34:31,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:34:31,763 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:34:31,776 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_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-57.i[916,929] [2024-11-14 03:34:31,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:34:31,877 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:34:31,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31 WrapperNode [2024-11-14 03:34:31,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:34:31,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:34:31,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:34:31,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:34:31,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:31,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:31,962 INFO L138 Inliner]: procedures = 29, calls = 143, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 417 [2024-11-14 03:34:31,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:34:31,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:34:31,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:34:31,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:34:31,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:31,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:31,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:31,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:32,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:32,036 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:32,041 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:32,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:32,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:34:32,047 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:34:32,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:34:32,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:34:32,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (1/1) ... [2024-11-14 03:34:32,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:34:32,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:34:32,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:34:32,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:34:32,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:34:32,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-14 03:34:32,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:34:32,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-14 03:34:32,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:34:32,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2024-11-14 03:34:32,129 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 03:34:32,129 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 03:34:32,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:34:32,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:34:32,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:34:32,266 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:34:32,267 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:34:32,859 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-11-14 03:34:32,860 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:34:33,425 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:34:33,426 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:34:33,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:34:33 BoogieIcfgContainer [2024-11-14 03:34:33,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:34:33,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:34:33,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:34:33,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:34:33,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:34:31" (1/3) ... [2024-11-14 03:34:33,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3f3afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:34:33, skipping insertion in model container [2024-11-14 03:34:33,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:34:31" (2/3) ... [2024-11-14 03:34:33,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c3f3afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:34:33, skipping insertion in model container [2024-11-14 03:34:33,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:34:33" (3/3) ... [2024-11-14 03:34:33,437 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-57.i [2024-11-14 03:34:33,501 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:34:33,503 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-57.i that has 2 procedures, 45 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 03:34:33,574 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:34:33,592 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;@36d789ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:34:33,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:34:33,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-14 03:34:33,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 03:34:33,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:34:33,609 INFO L215 NwaCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:33,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:34:33,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:34:33,615 INFO L85 PathProgramCache]: Analyzing trace with hash -595969334, now seen corresponding path program 1 times [2024-11-14 03:34:33,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:34:33,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073282975] [2024-11-14 03:34:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:34:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:34:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:34:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2024-11-14 03:34:57,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:34:57,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073282975] [2024-11-14 03:34:57,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073282975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:34:57,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230776431] [2024-11-14 03:34:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:34:57,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:34:57,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:34:57,867 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:34:57,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fe53b9f-b579-48cb-b51a-28acb2d5d9cb/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:34:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:34:59,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-14 03:34:59,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:34:59,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 38 [2024-11-14 03:35:00,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 33 [2024-11-14 03:35:00,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 46 [2024-11-14 03:35:00,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 46 [2024-11-14 03:35:01,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 54 [2024-11-14 03:35:02,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 64 [2024-11-14 03:35:03,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 64 [2024-11-14 03:35:03,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 57 [2024-11-14 03:35:04,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 67 [2024-11-14 03:35:08,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 244 [2024-11-14 03:35:08,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:35:08,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 49 [2024-11-14 03:35:08,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 144 [2024-11-14 03:35:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 43 proven. 225 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-14 03:35:15,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:35:17,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:35:17,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 168 [2024-11-14 03:35:54,842 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-14 03:35:54,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 96