./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version cf1a7837
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_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 070b005151a155625f2a1d89ebf21c03a6d381af2d7b663a2fe06061e79da5f4
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-cf1a783
[2023-11-12 02:23:35,942 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-11-12 02:23:36,055 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-12 02:23:36,061 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-11-12 02:23:36,062 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-12 02:23:36,114 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-12 02:23:36,115 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-12 02:23:36,116 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-12 02:23:36,117 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-12 02:23:36,124 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-12 02:23:36,126 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-12 02:23:36,127 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-11-12 02:23:36,128 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-11-12 02:23:36,130 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-12 02:23:36,130 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-11-12 02:23:36,131 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-11-12 02:23:36,131 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-11-12 02:23:36,131 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-11-12 02:23:36,132 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-11-12 02:23:36,132 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-11-12 02:23:36,133 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-12 02:23:36,133 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-11-12 02:23:36,134 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-11-12 02:23:36,134 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-11-12 02:23:36,135 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-11-12 02:23:36,136 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-12 02:23:36,136 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-11-12 02:23:36,137 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-11-12 02:23:36,137 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-12 02:23:36,137 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-12 02:23:36,139 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-11-12 02:23:36,139 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-12 02:23:36,139 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-11-12 02:23:36,139 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-12 02:23:36,140 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-12 02:23:36,140 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-12 02:23:36,140 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-11-12 02:23:36,140 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-12 02:23:36,141 INFO  L153        SettingsManager]:  * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-12 02:23:36,141 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/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_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl
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 -> Automizer
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 -> 070b005151a155625f2a1d89ebf21c03a6d381af2d7b663a2fe06061e79da5f4
[2023-11-12 02:23:36,400 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-12 02:23:36,435 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-12 02:23:36,442 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-12 02:23:36,444 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-11-12 02:23:36,444 INFO  L274        PluginConnector]: CDTParser initialized
[2023-11-12 02:23:36,446 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c
[2023-11-12 02:23:39,654 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-11-12 02:23:39,846 INFO  L384              CDTParser]: Found 1 translation units.
[2023-11-12 02:23:39,847 INFO  L180              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c
[2023-11-12 02:23:39,854 INFO  L427              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/data/bb217a59e/5bc1a9b57d9348af93f034f996c714ea/FLAG9614b18b4
[2023-11-12 02:23:39,868 INFO  L435              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/data/bb217a59e/5bc1a9b57d9348af93f034f996c714ea
[2023-11-12 02:23:39,871 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-12 02:23:39,872 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-12 02:23:39,874 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-12 02:23:39,874 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-12 02:23:39,879 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-12 02:23:39,880 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:39" (1/1) ...
[2023-11-12 02:23:39,881 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7458d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:39, skipping insertion in model container
[2023-11-12 02:23:39,881 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:23:39" (1/1) ...
[2023-11-12 02:23:39,902 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-11-12 02:23:40,063 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_4533842f-011f-4c00-aeb0-bccfeca1d192/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c[520,533]
[2023-11-12 02:23:40,079 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-12 02:23:40,090 INFO  L202         MainTranslator]: Completed pre-run
[2023-11-12 02:23:40,103 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_4533842f-011f-4c00-aeb0-bccfeca1d192/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c[520,533]
[2023-11-12 02:23:40,110 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-11-12 02:23:40,125 INFO  L206         MainTranslator]: Completed translation
[2023-11-12 02:23:40,126 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40 WrapperNode
[2023-11-12 02:23:40,126 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-12 02:23:40,127 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-12 02:23:40,128 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-12 02:23:40,128 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-12 02:23:40,136 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (1/1) ...
[2023-11-12 02:23:40,143 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (1/1) ...
[2023-11-12 02:23:40,161 INFO  L138                Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41
[2023-11-12 02:23:40,161 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-12 02:23:40,162 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-12 02:23:40,162 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-12 02:23:40,162 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-11-12 02:23:40,172 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (1/1) ...
[2023-11-12 02:23:40,172 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (1/1) ...
[2023-11-12 02:23:40,174 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (1/1) ...
[2023-11-12 02:23:40,174 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (1/1) ...
[2023-11-12 02:23:40,178 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (1/1) ...
[2023-11-12 02:23:40,181 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (1/1) ...
[2023-11-12 02:23:40,182 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (1/1) ...
[2023-11-12 02:23:40,183 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (1/1) ...
[2023-11-12 02:23:40,185 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-12 02:23:40,186 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-12 02:23:40,186 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-11-12 02:23:40,186 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-11-12 02:23:40,187 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (1/1) ...
[2023-11-12 02:23:40,194 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-12 02:23:40,217 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:23:40,231 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-12 02:23:40,251 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-12 02:23:40,271 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-12 02:23:40,271 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-12 02:23:40,271 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-12 02:23:40,272 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-12 02:23:40,272 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-11-12 02:23:40,272 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-11-12 02:23:40,328 INFO  L236             CfgBuilder]: Building ICFG
[2023-11-12 02:23:40,329 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-12 02:23:40,541 INFO  L277             CfgBuilder]: Performing block encoding
[2023-11-12 02:23:40,547 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-12 02:23:40,548 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-12 02:23:40,550 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:40 BoogieIcfgContainer
[2023-11-12 02:23:40,550 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-12 02:23:40,554 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-12 02:23:40,554 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-11-12 02:23:40,558 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-11-12 02:23:40,558 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:23:39" (1/3) ...
[2023-11-12 02:23:40,559 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6c8ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:40, skipping insertion in model container
[2023-11-12 02:23:40,560 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:23:40" (2/3) ...
[2023-11-12 02:23:40,560 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6c8ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:23:40, skipping insertion in model container
[2023-11-12 02:23:40,560 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:40" (3/3) ...
[2023-11-12 02:23:40,562 INFO  L112   eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound20.c
[2023-11-12 02:23:40,583 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-12 02:23:40,584 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-12 02:23:40,637 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-12 02:23:40,644 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=PETRI_NET, 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;@693b3d98, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-12 02:23:40,645 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-12 02:23:40,649 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2023-11-12 02:23:40,657 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2023-11-12 02:23:40,657 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:23:40,658 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:23:40,659 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:23:40,666 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:23:40,666 INFO  L85        PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times
[2023-11-12 02:23:40,678 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:23:40,678 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580594354]
[2023-11-12 02:23:40,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:23:40,679 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:23:40,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:23:40,827 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:23:40,827 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:23:40,827 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580594354]
[2023-11-12 02:23:40,828 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580594354] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:23:40,828 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:23:40,829 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-12 02:23:40,830 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99176321]
[2023-11-12 02:23:40,831 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:23:40,835 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-12 02:23:40,835 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:23:40,869 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-12 02:23:40,870 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-12 02:23:40,872 INFO  L87              Difference]: Start difference. First operand  has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:23:40,896 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:23:40,897 INFO  L93              Difference]: Finished difference Result 41 states and 64 transitions.
[2023-11-12 02:23:40,898 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-11-12 02:23:40,899 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2023-11-12 02:23:40,899 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:23:40,907 INFO  L225             Difference]: With dead ends: 41
[2023-11-12 02:23:40,908 INFO  L226             Difference]: Without dead ends: 18
[2023-11-12 02:23:40,911 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-12 02:23:40,915 INFO  L413           NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:23:40,917 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:23:40,935 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2023-11-12 02:23:40,953 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2023-11-12 02:23:40,955 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5)
[2023-11-12 02:23:40,956 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions.
[2023-11-12 02:23:40,958 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9
[2023-11-12 02:23:40,958 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:23:40,958 INFO  L495      AbstractCegarLoop]: Abstraction has 18 states and 23 transitions.
[2023-11-12 02:23:40,959 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:23:40,959 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions.
[2023-11-12 02:23:40,960 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2023-11-12 02:23:40,960 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:23:40,960 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:23:40,960 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-12 02:23:40,961 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:23:40,962 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:23:40,962 INFO  L85        PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times
[2023-11-12 02:23:40,962 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:23:40,963 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476652043]
[2023-11-12 02:23:40,963 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:23:40,963 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:23:40,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:23:41,268 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:23:41,268 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:23:41,269 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476652043]
[2023-11-12 02:23:41,269 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476652043] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-12 02:23:41,269 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-12 02:23:41,269 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-12 02:23:41,270 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078582573]
[2023-11-12 02:23:41,270 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:23:41,271 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-12 02:23:41,271 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:23:41,272 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-12 02:23:41,272 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-12 02:23:41,272 INFO  L87              Difference]: Start difference. First operand 18 states and 23 transitions. Second operand  has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:23:41,352 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:23:41,353 INFO  L93              Difference]: Finished difference Result 32 states and 42 transitions.
[2023-11-12 02:23:41,353 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-12 02:23:41,354 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2023-11-12 02:23:41,354 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:23:41,355 INFO  L225             Difference]: With dead ends: 32
[2023-11-12 02:23:41,355 INFO  L226             Difference]: Without dead ends: 30
[2023-11-12 02:23:41,356 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-11-12 02:23:41,357 INFO  L413           NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-12 02:23:41,358 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 65 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-12 02:23:41,359 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2023-11-12 02:23:41,371 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28.
[2023-11-12 02:23:41,372 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9)
[2023-11-12 02:23:41,373 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions.
[2023-11-12 02:23:41,373 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 9
[2023-11-12 02:23:41,374 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:23:41,374 INFO  L495      AbstractCegarLoop]: Abstraction has 28 states and 37 transitions.
[2023-11-12 02:23:41,374 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-12 02:23:41,374 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions.
[2023-11-12 02:23:41,375 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2023-11-12 02:23:41,375 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:23:41,375 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:23:41,376 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-12 02:23:41,376 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:23:41,376 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:23:41,377 INFO  L85        PathProgramCache]: Analyzing trace with hash 1170702338, now seen corresponding path program 1 times
[2023-11-12 02:23:41,377 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:23:41,377 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717653194]
[2023-11-12 02:23:41,377 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:23:41,377 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:23:41,411 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:23:41,411 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477436004]
[2023-11-12 02:23:41,412 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:23:41,412 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:23:41,412 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:23:41,419 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:23:41,434 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-12 02:23:41,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:23:41,492 INFO  L262         TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-11-12 02:23:41,498 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:23:41,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:23:41,625 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-12 02:23:41,782 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-12 02:23:41,782 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:23:41,783 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717653194]
[2023-11-12 02:23:41,783 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-12 02:23:41,783 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477436004]
[2023-11-12 02:23:41,783 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [477436004] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-12 02:23:41,784 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-12 02:23:41,784 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12
[2023-11-12 02:23:41,784 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453278695]
[2023-11-12 02:23:41,785 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-12 02:23:41,785 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-12 02:23:41,785 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:23:41,787 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-12 02:23:41,787 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132
[2023-11-12 02:23:41,788 INFO  L87              Difference]: Start difference. First operand 28 states and 37 transitions. Second operand  has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-11-12 02:23:41,986 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:23:41,986 INFO  L93              Difference]: Finished difference Result 38 states and 48 transitions.
[2023-11-12 02:23:41,987 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-12 02:23:41,988 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14
[2023-11-12 02:23:41,988 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:23:41,993 INFO  L225             Difference]: With dead ends: 38
[2023-11-12 02:23:41,994 INFO  L226             Difference]: Without dead ends: 33
[2023-11-12 02:23:41,996 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182
[2023-11-12 02:23:41,998 INFO  L413           NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-12 02:23:41,999 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 46 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-12 02:23:42,000 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2023-11-12 02:23:42,016 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31.
[2023-11-12 02:23:42,016 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2023-11-12 02:23:42,021 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions.
[2023-11-12 02:23:42,022 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 14
[2023-11-12 02:23:42,022 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:23:42,022 INFO  L495      AbstractCegarLoop]: Abstraction has 31 states and 37 transitions.
[2023-11-12 02:23:42,022 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-11-12 02:23:42,022 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions.
[2023-11-12 02:23:42,023 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2023-11-12 02:23:42,023 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:23:42,023 INFO  L195           NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:23:42,035 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-12 02:23:42,224 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:23:42,224 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:23:42,225 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:23:42,226 INFO  L85        PathProgramCache]: Analyzing trace with hash -1637726784, now seen corresponding path program 1 times
[2023-11-12 02:23:42,227 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:23:42,227 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472649097]
[2023-11-12 02:23:42,227 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:23:42,227 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:23:42,252 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:23:42,252 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018341858]
[2023-11-12 02:23:42,253 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:23:42,253 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:23:42,253 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:23:42,256 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:23:42,285 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-12 02:23:42,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-12 02:23:42,313 INFO  L262         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-11-12 02:23:42,315 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:23:42,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-11-12 02:23:42,414 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-12 02:23:42,473 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2023-11-12 02:23:42,473 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:23:42,473 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472649097]
[2023-11-12 02:23:42,473 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-12 02:23:42,474 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018341858]
[2023-11-12 02:23:42,474 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018341858] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-12 02:23:42,474 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-12 02:23:42,474 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9
[2023-11-12 02:23:42,474 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435146186]
[2023-11-12 02:23:42,475 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-12 02:23:42,475 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-12 02:23:42,475 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:23:42,476 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-12 02:23:42,476 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2023-11-12 02:23:42,476 INFO  L87              Difference]: Start difference. First operand 31 states and 37 transitions. Second operand  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2023-11-12 02:23:42,525 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:23:42,525 INFO  L93              Difference]: Finished difference Result 37 states and 42 transitions.
[2023-11-12 02:23:42,526 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-11-12 02:23:42,526 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26
[2023-11-12 02:23:42,527 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:23:42,527 INFO  L225             Difference]: With dead ends: 37
[2023-11-12 02:23:42,528 INFO  L226             Difference]: Without dead ends: 35
[2023-11-12 02:23:42,528 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2023-11-12 02:23:42,530 INFO  L413           NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-12 02:23:42,530 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 58 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-12 02:23:42,531 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2023-11-12 02:23:42,556 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2023-11-12 02:23:42,556 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 35 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2023-11-12 02:23:42,557 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions.
[2023-11-12 02:23:42,558 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 26
[2023-11-12 02:23:42,558 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:23:42,558 INFO  L495      AbstractCegarLoop]: Abstraction has 35 states and 40 transitions.
[2023-11-12 02:23:42,558 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2023-11-12 02:23:42,559 INFO  L276                IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions.
[2023-11-12 02:23:42,560 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-11-12 02:23:42,560 INFO  L187           NwaCegarLoop]: Found error trace
[2023-11-12 02:23:42,560 INFO  L195           NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-12 02:23:42,574 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-12 02:23:42,766 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:23:42,766 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-12 02:23:42,767 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-11-12 02:23:42,767 INFO  L85        PathProgramCache]: Analyzing trace with hash 1158721856, now seen corresponding path program 2 times
[2023-11-12 02:23:42,767 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-12 02:23:42,767 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864213063]
[2023-11-12 02:23:42,768 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-12 02:23:42,768 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-12 02:23:42,779 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-11-12 02:23:42,779 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728766746]
[2023-11-12 02:23:42,779 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-12 02:23:42,779 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:23:42,780 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3
[2023-11-12 02:23:42,781 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-12 02:23:42,789 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-12 02:23:42,850 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-12 02:23:42,851 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-12 02:23:42,853 INFO  L262         TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-11-12 02:23:42,857 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-11-12 02:23:43,000 INFO  L134       CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked.
[2023-11-12 02:23:43,001 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-11-12 02:23:43,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2023-11-12 02:23:43,207 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-12 02:23:43,209 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864213063]
[2023-11-12 02:23:43,209 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-11-12 02:23:43,209 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728766746]
[2023-11-12 02:23:43,210 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [728766746] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-12 02:23:43,210 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-11-12 02:23:43,210 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12
[2023-11-12 02:23:43,211 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848370750]
[2023-11-12 02:23:43,211 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-11-12 02:23:43,211 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-11-12 02:23:43,212 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-12 02:23:43,213 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-11-12 02:23:43,213 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2023-11-12 02:23:43,213 INFO  L87              Difference]: Start difference. First operand 35 states and 40 transitions. Second operand  has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9)
[2023-11-12 02:23:43,396 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-12 02:23:43,396 INFO  L93              Difference]: Finished difference Result 47 states and 57 transitions.
[2023-11-12 02:23:43,397 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-11-12 02:23:43,397 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 36
[2023-11-12 02:23:43,398 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-12 02:23:43,398 INFO  L225             Difference]: With dead ends: 47
[2023-11-12 02:23:43,398 INFO  L226             Difference]: Without dead ends: 0
[2023-11-12 02:23:43,399 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182
[2023-11-12 02:23:43,400 INFO  L413           NwaCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-11-12 02:23:43,400 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 104 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-11-12 02:23:43,401 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2023-11-12 02:23:43,401 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2023-11-12 02:23:43,401 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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)
[2023-11-12 02:23:43,402 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2023-11-12 02:23:43,402 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36
[2023-11-12 02:23:43,402 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-11-12 02:23:43,402 INFO  L495      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2023-11-12 02:23:43,402 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9)
[2023-11-12 02:23:43,403 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2023-11-12 02:23:43,403 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2023-11-12 02:23:43,405 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-11-12 02:23:43,413 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2023-11-12 02:23:43,611 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-12 02:23:43,613 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2023-11-12 02:23:44,595 INFO  L899   garLoopResultBuilder]: For program point L33(lines 30 42) no Hoare annotation was computed.
[2023-11-12 02:23:44,595 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2023-11-12 02:23:44,596 INFO  L895   garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* |ULTIMATE.start_main_~s~0#1| 4) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1)))
[2023-11-12 02:23:44,596 INFO  L895   garLoopResultBuilder]: At program point L31-1(line 31) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* |ULTIMATE.start_main_~s~0#1| 4) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1)))
[2023-11-12 02:23:44,596 INFO  L899   garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed.
[2023-11-12 02:23:44,596 INFO  L895   garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* |ULTIMATE.start_main_~s~0#1| 4) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1)))
[2023-11-12 02:23:44,596 INFO  L899   garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed.
[2023-11-12 02:23:44,596 INFO  L899   garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed.
[2023-11-12 02:23:44,597 INFO  L899   garLoopResultBuilder]: For program point main_returnLabel#1(lines 20 49) no Hoare annotation was computed.
[2023-11-12 02:23:44,597 INFO  L895   garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* |ULTIMATE.start_main_~s~0#1| 4) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1)))
[2023-11-12 02:23:44,597 INFO  L899   garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2023-11-12 02:23:44,597 INFO  L899   garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2023-11-12 02:23:44,597 INFO  L895   garLoopResultBuilder]: At program point L30-2(lines 30 42) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* |ULTIMATE.start_main_~s~0#1| 4) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1)))
[2023-11-12 02:23:44,597 INFO  L895   garLoopResultBuilder]: At program point L30-3(lines 30 42) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* |ULTIMATE.start_main_~s~0#1| 4) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1)))
[2023-11-12 02:23:44,598 INFO  L895   garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* |ULTIMATE.start_main_~s~0#1| 4) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1)))
[2023-11-12 02:23:44,598 INFO  L899   garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed.
[2023-11-12 02:23:44,598 INFO  L899   garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed.
[2023-11-12 02:23:44,598 INFO  L899   garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed.
[2023-11-12 02:23:44,598 INFO  L899   garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed.
[2023-11-12 02:23:44,598 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed.
[2023-11-12 02:23:44,598 INFO  L902   garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true
[2023-11-12 02:23:44,598 INFO  L899   garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed.
[2023-11-12 02:23:44,602 INFO  L445         BasicCegarLoop]: Path program histogram: [2, 1, 1, 1]
[2023-11-12 02:23:44,604 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-11-12 02:23:44,616 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:23:44 BoogieIcfgContainer
[2023-11-12 02:23:44,616 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-11-12 02:23:44,617 INFO  L112        PluginConnector]: ------------------------Witness Printer----------------------------
[2023-11-12 02:23:44,617 INFO  L270        PluginConnector]: Initializing Witness Printer...
[2023-11-12 02:23:44,618 INFO  L274        PluginConnector]: Witness Printer initialized
[2023-11-12 02:23:44,618 INFO  L184        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:23:40" (3/4) ...
[2023-11-12 02:23:44,620 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2023-11-12 02:23:44,625 INFO  L361     RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2023-11-12 02:23:44,629 INFO  L944   BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges
[2023-11-12 02:23:44,630 INFO  L944   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2023-11-12 02:23:44,630 INFO  L944   BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2023-11-12 02:23:44,630 INFO  L944   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2023-11-12 02:23:44,720 INFO  L149         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml
[2023-11-12 02:23:44,720 INFO  L149         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/witness.yml
[2023-11-12 02:23:44,721 INFO  L131        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-11-12 02:23:44,721 INFO  L158              Benchmark]: Toolchain (without parser) took 4849.03ms. Allocated memory is still 172.0MB. Free memory was 132.9MB in the beginning and 75.6MB in the end (delta: 57.3MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB.
[2023-11-12 02:23:44,722 INFO  L158              Benchmark]: CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-11-12 02:23:44,722 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 252.79ms. Allocated memory is still 172.0MB. Free memory was 132.9MB in the beginning and 122.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2023-11-12 02:23:44,722 INFO  L158              Benchmark]: Boogie Procedure Inliner took 33.82ms. Allocated memory is still 172.0MB. Free memory was 122.1MB in the beginning and 120.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-12 02:23:44,723 INFO  L158              Benchmark]: Boogie Preprocessor took 23.26ms. Allocated memory is still 172.0MB. Free memory was 120.5MB in the beginning and 119.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-11-12 02:23:44,723 INFO  L158              Benchmark]: RCFGBuilder took 364.60ms. Allocated memory is still 172.0MB. Free memory was 119.4MB in the beginning and 109.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2023-11-12 02:23:44,724 INFO  L158              Benchmark]: TraceAbstraction took 4062.48ms. Allocated memory is still 172.0MB. Free memory was 108.6MB in the beginning and 80.9MB in the end (delta: 27.8MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB.
[2023-11-12 02:23:44,724 INFO  L158              Benchmark]: Witness Printer took 103.44ms. Allocated memory is still 172.0MB. Free memory was 80.9MB in the beginning and 75.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB.
[2023-11-12 02:23:44,726 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.26ms. Allocated memory is still 111.1MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 252.79ms. Allocated memory is still 172.0MB. Free memory was 132.9MB in the beginning and 122.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 33.82ms. Allocated memory is still 172.0MB. Free memory was 122.1MB in the beginning and 120.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * Boogie Preprocessor took 23.26ms. Allocated memory is still 172.0MB. Free memory was 120.5MB in the beginning and 119.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * RCFGBuilder took 364.60ms. Allocated memory is still 172.0MB. Free memory was 119.4MB in the beginning and 109.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
 * TraceAbstraction took 4062.48ms. Allocated memory is still 172.0MB. Free memory was 108.6MB in the beginning and 80.9MB in the end (delta: 27.8MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB.
 * Witness Printer took 103.44ms. Allocated memory is still 172.0MB. Free memory was 80.9MB in the beginning and 75.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. 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
  - PositiveResult [Line: 14]: a call to reach_error is unreachable
    For all program executions holds that a call to reach_error is unreachable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 300 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 208 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 219 IncrementalHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 92 mSDtfsCounter, 219 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=4, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 31 PreInvPairs, 52 NumberOfFragments, 141 HoareAnnotationTreeSize, 31 FomulaSimplifications, 172 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 217 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 591 SizeOfPredicates, 7 NumberOfNonLiveVariables, 229 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 118/152 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
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - InvariantResult [Line: 30]: Loop Invariant
    Derived loop invariant: ((t == (1 + (2 * a))) && ((s * 4) == (((t * t) + (2 * t)) + 1)))
RESULT: Ultimate proved your program to be correct!
[2023-11-12 02:23:44,746 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4533842f-011f-4c00-aeb0-bccfeca1d192/bin/uautomizer-verify-uTZkv6EMXl/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
Writing output log to file Ultimate.log
Result:
TRUE