./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v1.c --full-output --architecture 64bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version 9bd2c7ff
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_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ --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 64bit --witnessprinter.graph.data.programhash caa84a091b99b66a1da3990b205ee8e8e4cfa2478d32b035bf8784a52ef5640a
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 04:13:34,180 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-19 04:13:34,317 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf
[2023-11-19 04:13:34,322 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 04:13:34,323 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 04:13:34,352 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 04:13:34,353 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 04:13:34,354 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 04:13:34,355 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 04:13:34,356 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 04:13:34,357 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2023-11-19 04:13:34,358 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-11-19 04:13:34,359 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2023-11-19 04:13:34,360 INFO  L153        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-11-19 04:13:34,361 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2023-11-19 04:13:34,361 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-11-19 04:13:34,362 INFO  L153        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-11-19 04:13:34,363 INFO  L153        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-11-19 04:13:34,363 INFO  L153        SettingsManager]:  * Interval Domain=false
[2023-11-19 04:13:34,364 INFO  L151        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-11-19 04:13:34,365 INFO  L153        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-11-19 04:13:34,366 INFO  L153        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-11-19 04:13:34,366 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 04:13:34,367 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-19 04:13:34,367 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-19 04:13:34,368 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-19 04:13:34,368 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 04:13:34,369 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 04:13:34,370 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 04:13:34,370 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-19 04:13:34,371 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-19 04:13:34,372 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 04:13:34,372 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-19 04:13:34,373 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 04:13:34,374 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 04:13:34,374 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 04:13:34,375 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 04:13:34,375 INFO  L153        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-11-19 04:13:34,376 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 04:13:34,377 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 04:13:34,377 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-11-19 04:13:34,378 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 04:13:34,379 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_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/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_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ
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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa84a091b99b66a1da3990b205ee8e8e4cfa2478d32b035bf8784a52ef5640a
[2023-11-19 04:13:34,660 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 04:13:34,696 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 04:13:34,700 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 04:13:34,701 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-19 04:13:34,702 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-19 04:13:34,704 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v1.c
[2023-11-19 04:13:37,903 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-19 04:13:38,151 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-19 04:13:38,152 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v1.c
[2023-11-19 04:13:38,167 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/data/c23ff36f0/8eb4b3b4820944c588f1383c25a097fe/FLAG447b3384a
[2023-11-19 04:13:38,196 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/data/c23ff36f0/8eb4b3b4820944c588f1383c25a097fe
[2023-11-19 04:13:38,199 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 04:13:38,201 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 04:13:38,203 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 04:13:38,204 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 04:13:38,211 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 04:13:38,212 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,214 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6273e52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38, skipping insertion in model container
[2023-11-19 04:13:38,214 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,258 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-19 04:13:38,445 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_21b3bb46-44c0-43a9-9841-77538c9dea52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v1.c[1249,1262]
[2023-11-19 04:13:38,559 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 04:13:38,571 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-19 04:13:38,584 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_21b3bb46-44c0-43a9-9841-77538c9dea52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v1.c[1249,1262]
[2023-11-19 04:13:38,658 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 04:13:38,683 INFO  L206         MainTranslator]: Completed translation
[2023-11-19 04:13:38,683 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38 WrapperNode
[2023-11-19 04:13:38,683 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 04:13:38,684 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 04:13:38,685 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 04:13:38,685 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 04:13:38,693 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,711 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,793 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 462
[2023-11-19 04:13:38,794 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 04:13:38,795 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 04:13:38,795 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 04:13:38,795 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 04:13:38,813 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,813 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,825 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,841 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,882 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,888 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,905 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,912 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,926 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 04:13:38,928 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 04:13:38,928 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 04:13:38,929 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-19 04:13:38,930 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (1/1) ...
[2023-11-19 04:13:38,937 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 04:13:38,952 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/z3
[2023-11-19 04:13:38,971 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 04:13:38,993 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 04:13:39,022 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 04:13:39,022 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 04:13:39,022 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 04:13:39,022 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 04:13:39,154 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-19 04:13:39,157 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 04:13:39,965 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-19 04:13:40,604 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 04:13:40,604 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-19 04:13:40,609 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:40 BoogieIcfgContainer
[2023-11-19 04:13:40,611 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 04:13:40,617 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 04:13:40,617 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 04:13:40,621 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-19 04:13:40,621 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:13:38" (1/3) ...
[2023-11-19 04:13:40,622 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c4baac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:40, skipping insertion in model container
[2023-11-19 04:13:40,622 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:38" (2/3) ...
[2023-11-19 04:13:40,624 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c4baac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:40, skipping insertion in model container
[2023-11-19 04:13:40,625 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:40" (3/3) ...
[2023-11-19 04:13:40,626 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.eq_sdp_v1.c
[2023-11-19 04:13:40,650 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 04:13:40,651 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 04:13:40,723 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 04:13:40,732 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;@237b6f6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-19 04:13:40,733 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-19 04:13:40,738 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 04:13:40,745 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2023-11-19 04:13:40,745 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 04:13:40,746 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2023-11-19 04:13:40,747 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 04:13:40,753 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 04:13:40,754 INFO  L85        PathProgramCache]: Analyzing trace with hash 12811310, now seen corresponding path program 1 times
[2023-11-19 04:13:40,766 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-11-19 04:13:40,767 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968786004]
[2023-11-19 04:13:40,767 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 04:13:40,768 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 04:13:41,264 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 04:13:41,265 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-11-19 04:13:41,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-11-19 04:13:41,544 INFO  L130   FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2023-11-19 04:13:41,552 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-11-19 04:13:41,554 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-11-19 04:13:41,556 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 04:13:41,562 INFO  L445         BasicCegarLoop]: Path program histogram: [1]
[2023-11-19 04:13:41,567 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-11-19 04:13:41,609 WARN  L320   BoogieBacktranslator]: Removing null node from list of ATEs: ATE  program state null
[2023-11-19 04:13:41,634 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:13:41 BoogieIcfgContainer
[2023-11-19 04:13:41,635 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-19 04:13:41,638 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-19 04:13:41,638 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2023-11-19 04:13:41,638 INFO  L274        PluginConnector]: Witness Printer initialized
[2023-11-19 04:13:41,639 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:40" (3/4) ...
[2023-11-19 04:13:41,642 INFO  L140         WitnessPrinter]: No result that supports witness generation found
[2023-11-19 04:13:41,643 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-19 04:13:41,645 INFO  L158              Benchmark]: Toolchain (without parser) took 3443.49ms. Allocated memory was 163.6MB in the beginning and 205.5MB in the end (delta: 41.9MB). Free memory was 117.2MB in the beginning and 81.9MB in the end (delta: 35.3MB). Peak memory consumption was 79.3MB. Max. memory is 16.1GB.
[2023-11-19 04:13:41,646 INFO  L158              Benchmark]: CDTParser took 0.29ms. Allocated memory is still 163.6MB. Free memory was 107.4MB in the beginning and 107.3MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 04:13:41,647 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 480.51ms. Allocated memory is still 163.6MB. Free memory was 116.7MB in the beginning and 100.6MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2023-11-19 04:13:41,648 INFO  L158              Benchmark]: Boogie Procedure Inliner took 109.45ms. Allocated memory is still 163.6MB. Free memory was 100.6MB in the beginning and 92.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2023-11-19 04:13:41,654 INFO  L158              Benchmark]: Boogie Preprocessor took 132.07ms. Allocated memory is still 163.6MB. Free memory was 92.0MB in the beginning and 88.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2023-11-19 04:13:41,655 INFO  L158              Benchmark]: RCFGBuilder took 1683.38ms. Allocated memory was 163.6MB in the beginning and 205.5MB in the end (delta: 41.9MB). Free memory was 88.5MB in the beginning and 122.8MB in the end (delta: -34.3MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB.
[2023-11-19 04:13:41,657 INFO  L158              Benchmark]: TraceAbstraction took 1018.58ms. Allocated memory is still 205.5MB. Free memory was 121.8MB in the beginning and 81.9MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB.
[2023-11-19 04:13:41,658 INFO  L158              Benchmark]: Witness Printer took 5.75ms. Allocated memory is still 205.5MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-19 04:13:41,665 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.29ms. Allocated memory is still 163.6MB. Free memory was 107.4MB in the beginning and 107.3MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 480.51ms. Allocated memory is still 163.6MB. Free memory was 116.7MB in the beginning and 100.6MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 109.45ms. Allocated memory is still 163.6MB. Free memory was 100.6MB in the beginning and 92.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 132.07ms. Allocated memory is still 163.6MB. Free memory was 92.0MB in the beginning and 88.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
 * RCFGBuilder took 1683.38ms. Allocated memory was 163.6MB in the beginning and 205.5MB in the end (delta: 41.9MB). Free memory was 88.5MB in the beginning and 122.8MB in the end (delta: -34.3MB). Peak memory consumption was 48.1MB. Max. memory is 16.1GB.
 * TraceAbstraction took 1018.58ms. Allocated memory is still 205.5MB. Free memory was 121.8MB in the beginning and 81.9MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB.
 * Witness Printer took 5.75ms. Allocated memory is still 205.5MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable
    Unable to prove that a call to reach_error is unreachable
 Reason: overapproximation of bitwiseAnd at line 88. 
Possible FailurePath: 
[L26]              const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 8);
[L27]              const SORT_1 msb_SORT_1 = (SORT_1)1 << (8 - 1);
[L29]              const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 1);
[L30]              const SORT_5 msb_SORT_5 = (SORT_5)1 << (1 - 1);
[L32]              const SORT_1 var_10 = 0;
[L33]              const SORT_5 var_18 = 1;
[L34]              const SORT_5 var_28 = 0;
[L36]              SORT_1 input_2;
[L37]              SORT_1 input_3;
[L38]              SORT_1 input_4;
[L39]              SORT_5 input_6;
[L40]              SORT_5 input_7;
[L41]              SORT_5 input_8;
[L42]              SORT_5 input_9;
[L44]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_1
[L44]              SORT_1 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_1;
[L45]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_1
[L45]              SORT_1 state_13 = __VERIFIER_nondet_uchar() & mask_SORT_1;
[L46]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_1
[L46]              SORT_1 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_1;
[L47]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_1
[L47]              SORT_1 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_1;
[L48]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_1
[L48]              SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1;
[L49]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_5
[L49]              SORT_5 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_5;
[L50]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_5
[L50]              SORT_5 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_5;
[L51]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_1
[L51]              SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1;
[L52]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_5
[L52]              SORT_5 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_5;
[L53]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_1
[L53]              SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1;
[L54]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_1
[L54]              SORT_1 state_40 = __VERIFIER_nondet_uchar() & mask_SORT_1;
[L55]   EXPR       __VERIFIER_nondet_uchar() & mask_SORT_1
[L55]              SORT_1 state_42 = __VERIFIER_nondet_uchar() & mask_SORT_1;
[L57]              SORT_1 init_12_arg_1 = var_10;
[L58]              state_11 = init_12_arg_1
[L59]              SORT_1 init_14_arg_1 = var_10;
[L60]              state_13 = init_14_arg_1
[L61]              SORT_1 init_23_arg_1 = var_10;
[L62]              state_22 = init_23_arg_1
[L63]              SORT_1 init_25_arg_1 = var_10;
[L64]              state_24 = init_25_arg_1
[L65]              SORT_1 init_27_arg_1 = var_10;
[L66]              state_26 = init_27_arg_1
[L67]              SORT_5 init_30_arg_1 = var_28;
[L68]              state_29 = init_30_arg_1
[L69]              SORT_5 init_32_arg_1 = var_28;
[L70]              state_31 = init_32_arg_1
[L71]              SORT_1 init_34_arg_1 = var_10;
[L72]              state_33 = init_34_arg_1
[L73]              SORT_5 init_36_arg_1 = var_28;
[L74]              state_35 = init_36_arg_1
[L75]              SORT_1 init_38_arg_1 = var_10;
[L76]              state_37 = init_38_arg_1
[L77]              SORT_1 init_41_arg_1 = var_10;
[L78]              state_40 = init_41_arg_1
[L79]              SORT_1 init_43_arg_1 = var_10;
[L80]              state_42 = init_43_arg_1
        VAL        [init_12_arg_1=0, init_14_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_41_arg_1=0, init_43_arg_1=0, mask_SORT_1=255, mask_SORT_5=1, msb_SORT_1=128, msb_SORT_5=1, state_11=0, state_13=0, state_22=0, state_24=0, state_26=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_40=0, state_42=0, var_10=0, var_18=1, var_28=0]
[L83]              input_2 = __VERIFIER_nondet_uchar()
[L84]              input_3 = __VERIFIER_nondet_uchar()
[L85]              input_4 = __VERIFIER_nondet_uchar()
[L86]              input_6 = __VERIFIER_nondet_uchar()
[L87]              input_7 = __VERIFIER_nondet_uchar()
[L88]   EXPR       input_7 & mask_SORT_5
[L88]              input_7 = input_7 & mask_SORT_5
[L89]              input_8 = __VERIFIER_nondet_uchar()
[L90]   EXPR       input_8 & mask_SORT_5
[L90]              input_8 = input_8 & mask_SORT_5
[L91]              input_9 = __VERIFIER_nondet_uchar()
[L92]   EXPR       input_9 & mask_SORT_5
[L92]              input_9 = input_9 & mask_SORT_5
[L95]              SORT_1 var_15_arg_0 = state_11;
[L96]              SORT_1 var_15_arg_1 = state_13;
[L97]              SORT_5 var_15 = var_15_arg_0 == var_15_arg_1;
[L98]              SORT_5 var_19_arg_0 = var_15;
[L99]              SORT_5 var_19 = ~var_19_arg_0;
[L100]             SORT_5 var_20_arg_0 = var_18;
[L101]             SORT_5 var_20_arg_1 = var_19;
[L102]  EXPR       var_20_arg_0 & var_20_arg_1
[L102]             SORT_5 var_20 = var_20_arg_0 & var_20_arg_1;
[L103]  EXPR       var_20 & mask_SORT_5
[L103]             var_20 = var_20 & mask_SORT_5
[L104]             SORT_5 bad_21_arg_0 = var_20;
[L105]  CALL       __VERIFIER_assert(!(bad_21_arg_0))
[L21]   COND TRUE  !(cond)
        VAL        [\old(cond)=0, cond=0]
[L21]              reach_error()
        VAL        [\old(cond)=0, cond=0]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2023-11-19 04:13:41,710 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis

### Bit-precise run ###
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_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ --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 64bit --witnessprinter.graph.data.programhash caa84a091b99b66a1da3990b205ee8e8e4cfa2478d32b035bf8784a52ef5640a
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 04:13:44,695 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-19 04:13:44,867 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Bitvector.epf
[2023-11-19 04:13:44,877 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 04:13:44,878 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 04:13:44,930 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 04:13:44,931 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 04:13:44,932 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 04:13:44,933 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 04:13:44,939 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 04:13:44,939 INFO  L153        SettingsManager]:  * User list type=DISABLED
[2023-11-19 04:13:44,940 INFO  L151        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-11-19 04:13:44,940 INFO  L153        SettingsManager]:  * Explicit value domain=true
[2023-11-19 04:13:44,942 INFO  L153        SettingsManager]:  * Octagon Domain=false
[2023-11-19 04:13:44,943 INFO  L153        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-11-19 04:13:44,943 INFO  L153        SettingsManager]:  * Interval Domain=false
[2023-11-19 04:13:44,945 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 04:13:44,945 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-19 04:13:44,946 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-19 04:13:44,946 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 04:13:44,947 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 04:13:44,948 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 04:13:44,948 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-11-19 04:13:44,949 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-11-19 04:13:44,949 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-11-19 04:13:44,950 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-19 04:13:44,950 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-19 04:13:44,951 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 04:13:44,951 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-19 04:13:44,951 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-19 04:13:44,953 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 04:13:44,954 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 04:13:44,954 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 04:13:44,954 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 04:13:44,955 INFO  L153        SettingsManager]:  * Trace refinement strategy=WALRUS
[2023-11-19 04:13:44,955 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2023-11-19 04:13:44,955 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 04:13:44,956 INFO  L153        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-11-19 04:13:44,956 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 04:13:44,957 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
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_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/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_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ
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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa84a091b99b66a1da3990b205ee8e8e4cfa2478d32b035bf8784a52ef5640a
[2023-11-19 04:13:45,447 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 04:13:45,475 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 04:13:45,478 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 04:13:45,479 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-19 04:13:45,482 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-19 04:13:45,483 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v1.c
[2023-11-19 04:13:48,855 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-19 04:13:49,261 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-19 04:13:49,262 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v1.c
[2023-11-19 04:13:49,277 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/data/407b891d9/b009fa2655b4465d81ece8441a037682/FLAG10cb5290f
[2023-11-19 04:13:49,301 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/data/407b891d9/b009fa2655b4465d81ece8441a037682
[2023-11-19 04:13:49,310 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 04:13:49,312 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 04:13:49,317 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 04:13:49,317 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 04:13:49,323 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 04:13:49,324 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:49,326 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2c1515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49, skipping insertion in model container
[2023-11-19 04:13:49,326 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:49,378 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-19 04:13:49,622 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_21b3bb46-44c0-43a9-9841-77538c9dea52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v1.c[1249,1262]
[2023-11-19 04:13:49,751 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 04:13:49,768 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-19 04:13:49,789 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_21b3bb46-44c0-43a9-9841-77538c9dea52/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.eq_sdp_v1.c[1249,1262]
[2023-11-19 04:13:49,872 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-19 04:13:49,898 INFO  L206         MainTranslator]: Completed translation
[2023-11-19 04:13:49,899 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49 WrapperNode
[2023-11-19 04:13:49,899 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 04:13:49,900 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 04:13:49,901 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 04:13:49,901 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 04:13:49,910 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:49,927 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:49,975 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 252
[2023-11-19 04:13:49,985 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 04:13:49,987 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 04:13:49,988 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 04:13:49,988 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 04:13:49,999 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:50,000 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:50,013 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:50,014 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:50,027 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:50,031 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:50,034 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:50,037 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:50,042 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 04:13:50,043 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 04:13:50,044 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 04:13:50,044 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-19 04:13:50,045 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (1/1) ...
[2023-11-19 04:13:50,052 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 04:13:50,087 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/z3
[2023-11-19 04:13:50,108 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 04:13:50,138 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 04:13:50,181 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 04:13:50,181 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2023-11-19 04:13:50,182 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 04:13:50,182 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 04:13:50,352 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-19 04:13:50,355 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 04:13:50,676 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-19 04:13:50,683 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 04:13:50,684 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-19 04:13:50,687 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:50 BoogieIcfgContainer
[2023-11-19 04:13:50,687 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 04:13:50,690 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 04:13:50,690 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 04:13:50,694 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-19 04:13:50,694 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:13:49" (1/3) ...
[2023-11-19 04:13:50,695 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcea3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:50, skipping insertion in model container
[2023-11-19 04:13:50,695 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:13:49" (2/3) ...
[2023-11-19 04:13:50,696 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcea3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:13:50, skipping insertion in model container
[2023-11-19 04:13:50,696 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:13:50" (3/3) ...
[2023-11-19 04:13:50,697 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.eq_sdp_v1.c
[2023-11-19 04:13:50,721 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 04:13:50,722 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 04:13:50,781 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 04:13:50,789 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;@a316b9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-11-19 04:13:50,789 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-19 04:13:50,794 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 04:13:50,801 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2023-11-19 04:13:50,802 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 04:13:50,823 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2023-11-19 04:13:50,824 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 04:13:50,831 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 04:13:50,832 INFO  L85        PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times
[2023-11-19 04:13:50,848 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-11-19 04:13:50,849 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285928415]
[2023-11-19 04:13:50,849 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 04:13:50,850 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 04:13:50,850 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/mathsat
[2023-11-19 04:13:50,854 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 04:13:50,862 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-11-19 04:13:51,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 04:13:51,023 INFO  L262         TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-19 04:13:51,032 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 04:13:51,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 04:13:51,353 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 04:13:51,354 INFO  L136   FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-11-19 04:13:51,355 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285928415]
[2023-11-19 04:13:51,356 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285928415] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 04:13:51,356 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 04:13:51,356 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 04:13:51,359 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039534801]
[2023-11-19 04:13:51,361 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 04:13:51,366 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 04:13:51,366 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS
[2023-11-19 04:13:51,410 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 04:13:51,410 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 04:13:51,413 INFO  L87              Difference]: Start difference. First operand  has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 04:13:51,500 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 04:13:51,501 INFO  L93              Difference]: Finished difference Result 19 states and 27 transitions.
[2023-11-19 04:13:51,503 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-11-19 04:13:51,504 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5
[2023-11-19 04:13:51,505 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 04:13:51,515 INFO  L225             Difference]: With dead ends: 19
[2023-11-19 04:13:51,515 INFO  L226             Difference]: Without dead ends: 10
[2023-11-19 04:13:51,518 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-11-19 04:13:51,523 INFO  L413           NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 04:13:51,525 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 04:13:51,545 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2023-11-19 04:13:51,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2023-11-19 04:13:51,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 04:13:51,563 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2023-11-19 04:13:51,565 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2023-11-19 04:13:51,565 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-19 04:13:51,565 INFO  L495      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2023-11-19 04:13:51,566 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 04:13:51,566 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2023-11-19 04:13:51,566 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2023-11-19 04:13:51,567 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-19 04:13:51,567 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2023-11-19 04:13:51,582 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-11-19 04:13:51,782 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 04:13:51,782 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 04:13:51,783 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 04:13:51,783 INFO  L85        PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times
[2023-11-19 04:13:51,786 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WALRUS
[2023-11-19 04:13:51,787 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669552120]
[2023-11-19 04:13:51,787 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 04:13:51,787 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-11-19 04:13:51,788 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/mathsat
[2023-11-19 04:13:51,789 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-11-19 04:13:51,791 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-11-19 04:13:52,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 04:13:52,057 INFO  L262         TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 48 conjunts are in the unsatisfiable core
[2023-11-19 04:13:52,068 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 04:13:52,862 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 04:13:52,862 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 04:14:00,275 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 04:14:00,276 INFO  L136   FreeRefinementEngine]: Strategy WALRUS found an infeasible trace
[2023-11-19 04:14:00,277 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669552120]
[2023-11-19 04:14:00,277 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669552120] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 04:14:00,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [914830792]
[2023-11-19 04:14:00,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 04:14:00,279 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-11-19 04:14:00,279 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/cvc4
[2023-11-19 04:14:00,285 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-11-19 04:14:00,298 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2023-11-19 04:14:00,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 04:14:00,553 INFO  L262         TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 66 conjunts are in the unsatisfiable core
[2023-11-19 04:14:00,559 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 04:14:02,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 04:14:02,034 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 04:14:15,129 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 04:14:15,129 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [914830792] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 04:14:15,130 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050141815]
[2023-11-19 04:14:15,130 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 04:14:15,130 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 04:14:15,130 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/z3
[2023-11-19 04:14:15,133 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 04:14:15,153 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21b3bb46-44c0-43a9-9841-77538c9dea52/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-19 04:14:15,269 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 04:14:15,272 INFO  L262         TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 41 conjunts are in the unsatisfiable core
[2023-11-19 04:14:15,276 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 04:14:17,944 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 04:14:17,944 INFO  L327         TraceCheckSpWp]: Computing backward predicates...