./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-88.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-88.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh --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 9f13b6ec153b424c9c18800ebe21aa9579fe753fb31fef85cd6c1089c45b899c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:15:59,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:15:59,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:15:59,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:15:59,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:15:59,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:15:59,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:15:59,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:15:59,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:15:59,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:15:59,757 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:15:59,758 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:15:59,758 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:15:59,759 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:15:59,759 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:15:59,760 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:15:59,760 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:15:59,761 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:15:59,761 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:15:59,762 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:15:59,762 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:15:59,763 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:15:59,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:15:59,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:15:59,765 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:15:59,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:15:59,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:15:59,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:15:59,766 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:15:59,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:15:59,767 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:15:59,767 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:15:59,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:15:59,768 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:15:59,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:15:59,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:15:59,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:15:59,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:15:59,769 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:15:59,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:15:59,769 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:15:59,770 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:15:59,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:15:59,770 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:15:59,770 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:15:59,770 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:15:59,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:15:59,771 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f13b6ec153b424c9c18800ebe21aa9579fe753fb31fef85cd6c1089c45b899c [2023-12-02 16:15:59,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:16:00,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:16:00,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:16:00,013 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:16:00,013 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:16:00,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-88.i [2023-12-02 16:16:02,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:16:02,958 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:16:02,959 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-88.i [2023-12-02 16:16:02,969 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/data/71c0c3646/98587be12a894a8999ce8a47b08d73ed/FLAGebf0dacd2 [2023-12-02 16:16:02,981 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/data/71c0c3646/98587be12a894a8999ce8a47b08d73ed [2023-12-02 16:16:02,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:16:02,985 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:16:02,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:16:02,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:16:02,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:16:02,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:16:02" (1/1) ... [2023-12-02 16:16:02,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba8f832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:02, skipping insertion in model container [2023-12-02 16:16:02,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:16:02" (1/1) ... [2023-12-02 16:16:03,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:16:03,144 WARN L240 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_1538f1e9-60ed-4084-a60b-77e83ac9a95d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-88.i[917,930] [2023-12-02 16:16:03,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:16:03,223 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:16:03,233 WARN L240 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_1538f1e9-60ed-4084-a60b-77e83ac9a95d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-88.i[917,930] [2023-12-02 16:16:03,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:16:03,294 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:16:03,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03 WrapperNode [2023-12-02 16:16:03,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:16:03,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:16:03,296 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:16:03,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:16:03,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (1/1) ... [2023-12-02 16:16:03,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (1/1) ... [2023-12-02 16:16:03,357 INFO L138 Inliner]: procedures = 29, calls = 169, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 486 [2023-12-02 16:16:03,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:16:03,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:16:03,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:16:03,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:16:03,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (1/1) ... [2023-12-02 16:16:03,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (1/1) ... [2023-12-02 16:16:03,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (1/1) ... [2023-12-02 16:16:03,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (1/1) ... [2023-12-02 16:16:03,394 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (1/1) ... [2023-12-02 16:16:03,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (1/1) ... [2023-12-02 16:16:03,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (1/1) ... [2023-12-02 16:16:03,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (1/1) ... [2023-12-02 16:16:03,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:16:03,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:16:03,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:16:03,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:16:03,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (1/1) ... [2023-12-02 16:16:03,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:16:03,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:16:03,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:16:03,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:16:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:16:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 16:16:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:16:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 16:16:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:16:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 16:16:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:16:03,486 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:16:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:16:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:16:03,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:16:03,619 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:16:03,621 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:16:04,083 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:16:04,682 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:16:04,682 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:16:04,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:16:04 BoogieIcfgContainer [2023-12-02 16:16:04,684 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:16:04,687 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:16:04,687 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:16:04,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:16:04,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:16:02" (1/3) ... [2023-12-02 16:16:04,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aa598e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:16:04, skipping insertion in model container [2023-12-02 16:16:04,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:16:03" (2/3) ... [2023-12-02 16:16:04,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49aa598e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:16:04, skipping insertion in model container [2023-12-02 16:16:04,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:16:04" (3/3) ... [2023-12-02 16:16:04,694 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-88.i [2023-12-02 16:16:04,713 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:16:04,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:16:04,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:16:04,769 INFO L357 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, mHoare=true, 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;@24d14a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:16:04,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:16:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-02 16:16:04,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 16:16:04,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:16:04,785 INFO L195 NwaCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:16:04,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:16:04,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:16:04,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1645975881, now seen corresponding path program 1 times [2023-12-02 16:16:04,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:16:04,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473903610] [2023-12-02 16:16:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:16:04,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:16:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:03,944 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-02 16:17:03,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:17:03,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473903610] [2023-12-02 16:17:03,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473903610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:17:03,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944026106] [2023-12-02 16:17:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:17:03,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:17:03,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:17:03,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:17:03,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1538f1e9-60ed-4084-a60b-77e83ac9a95d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:17:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:17:05,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 179 conjunts are in the unsatisfiable core [2023-12-02 16:17:05,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:17:06,362 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 39 treesize of output 43 [2023-12-02 16:17:08,996 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 46 treesize of output 43 [2023-12-02 16:17:11,134 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 39 treesize of output 43 [2023-12-02 16:17:12,208 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 46 treesize of output 43 [2023-12-02 16:17:14,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 53 [2023-12-02 16:17:17,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 53 [2023-12-02 16:17:18,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 53 [2023-12-02 16:17:21,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 70 [2023-12-02 16:17:23,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 70 [2023-12-02 16:17:28,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:17:28,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:17:28,461 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-12-02 16:17:28,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 16 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 2 case distinctions, treesize of input 218 treesize of output 212 [2023-12-02 16:17:28,854 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 126 treesize of output 123 [2023-12-02 16:17:29,046 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 186 treesize of output 186 [2023-12-02 16:17:38,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 301 treesize of output 345 [2023-12-02 16:17:38,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 335 [2023-12-02 16:17:39,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 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 26 treesize of output 36 [2023-12-02 16:17:39,186 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 16:17:39,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 18 treesize of output 7 [2023-12-02 16:17:39,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 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 26 treesize of output 25 [2023-12-02 16:17:39,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 98 [2023-12-02 16:17:39,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:17:39,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:17:39,459 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 16:17:39,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 66 [2023-12-02 16:17:39,536 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 139 treesize of output 100 [2023-12-02 16:17:39,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 18 treesize of output 3 [2023-12-02 16:17:39,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:17:39,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 16:17:39,563 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 16:17:39,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 83 [2023-12-02 16:17:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 18 proven. 238 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 16:17:39,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:17:42,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:17:42,629 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 175 treesize of output 173 [2023-12-02 16:17:42,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:17:42,960 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 741 treesize of output 742